Question

An oil company fills 1/12 of a tank in 1/3 hour. At this rate, which expression can be used to determine how long it will take for the tank to fill completely?
A:1/12x3hrs
B:1/3 x 12hrs
C:1/3 x 1/12hrs
D:3x12hrs
P.s hrs = hours

Answer 1

Answer:

1/3 x 12

Step-by-step explanation:

just find the time taken and the expression will just reveal itself

if 1/12 tank= 1/3 hrs

1 tank = 1 x 1/3

              1/12

=1/3  /   1/12

=1/3 x 12

( not compulsory just thought some one might not wanna calculate but just know the time taken: )

1/3 x 12

= 4hrs)